Billiard accessory



FIG. 1 is a front perspective view of a billiard accessory showing, in particular, the ornamental design thereof.

FIG. 2 is a front view of the billiard accessory of FIG. 1.

FIG. 3 is a rear view of the billiard accessory of FIG. 1.

FIG. 4 is a top plan view of the billiard accessory of FIG. 1.

FIG. 5 is a bottom view of the billiard accessory of FIG. 1.

FIG. 6 is a left side view of the billiard accessory of FIG. 1; and,

FIG. 7 is a right side view of the billiard accessory of FIG. 1.

The broken lines illustrate portions of the billiard accessory that form no part of the claimed design. 

CLAIM The ornamental design for a billiard accessory, as shown and described. 